Thanks...maybe someone else will chime in. Just glad I am not missing something obvious in the thread you mentioned.
Based on my last post it should still work to load the addin and I have done the recommended clean install to eliminate prior install problems with no luck.
Found this in the eventvwr.
Activation context generation failed for "C:\Program Files\AVAST Software\Avast\asOutExt64.dll". Dependent Assembly Microsoft.VC90.ATL,processorArchitecture="amd64",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.21022.8" could not be found. Please use sxstrace.exe for detailed diagnosis.